Carmarthen was one of six local government district

Districts of Wales

In 1974, Wales was re-divided for local government purposes into thirty-seven districts. Districts were the second tier of local government introduced by the Local Government Act 1972, being subdivisions of the eight counties introduced at the same time...

s of the county of Dyfed

Dyfed

Dyfed is a preserved county of Wales. It was created on 1 April 1974 under the terms of the Local Government Act 1972, and covered approximately the same geographic extent as the ancient Principality of Deheubarth, although excluding the Gower Peninsula and the area west of the River Tawe...

, west Wales

Wales

Wales is a country that is part of the United Kingdom and the island of Great Britain, bordered by England to its east and the Atlantic Ocean and Irish Sea to its west. It has a population of three million, and a total area of 20,779 km²...

, from 1974 to 1996. It was formed under the Local Government Act 1972

Local Government Act 1972

The Local Government Act 1972 is an Act of Parliament in the United Kingdom that reformed local government in England and Wales on 1 April 1974....

 from the following parts of the administrative county of Carmarthenshire

Carmarthenshire

Carmarthenshire is a unitary authority in the south west of Wales and one of thirteen historic counties. It is the 3rd largest in Wales. Its three largest towns are Llanelli, Carmarthen and Ammanford...

:

• The municipal borough
  Municipal borough
  Municipal boroughs were a type of local government district which existed in England and Wales between 1835 and 1974, in Northern Ireland from 1840 to 1973 and in the Republic of Ireland from 1840 to 2002...
  
   of Carmarthen
  Carmarthen
  Carmarthen is a community in, and the county town of, Carmarthenshire, Wales. It is sited on the River Towy north of its mouth at Carmarthen Bay. In 2001, the population was 14,648....
  
  
• The urban district
  Urban district
  In the England, Wales and Ireland, an urban district was a type of local government district that covered an urbanised area. Urban districts had an elected Urban District Council , which shared local government responsibilities with a county council....
  
   of Newcastle Emlyn
  Newcastle Emlyn
  Newcastle Emlyn is a town straddling the counties of Ceredigion and Carmarthenshire in west Wales and lying on the River Teifi.Adpar is the part of the town that lies on the Ceredigion side of the River Teifi...
  
  
• The rural district
  Rural district
  Rural districts were a type of local government area – now superseded – established at the end of the 19th century in England, Wales, and Ireland for the administration of predominantly rural areas at a level lower than that of the administrative counties.-England and Wales:In England...
  
  s of Carmarthen and Newcastle Emlyn

In 1996 the district was abolished under the Local Government (Wales) Act 1994

Local Government (Wales) Act 1994

The Local Government Act 1994 is an Act of the Parliament of the United Kingdom which created the current local government structure in Wales of 22 unitary authority areas, referred to as principal areas in the Act, and abolished the previous two-tier structure of counties and districts...

. It was replaced by the new unitary authority of Carmarthenshire, which covers the areas of the former districts of Carmarthen, Llanelli

Llanelli (district)

The Borough of Llanelli was one of thirty-seven local government districts in Wales from 1974 to 1996. It was the smallest of six districts in the newly-created county of Dyfed, and was formed under the Local Government Act 1972 by a merger of the municipal boroughs of Llanelli and Kidwelly, Burry...

 and Dinefwr

Dinefwr

Dinefwr was a local government district of Dyfed, Wales from 1974 to 1996. It was named after Dinefwr Castle which was the royal capital of the Principality of Deheubarth and one of the three principal royal courts of Wales....

.